TW564404B - Optical disk unit and information recording and reproducing method - Google Patents

Optical disk unit and information recording and reproducing method Download PDF

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Publication number
TW564404B
TW564404B TW090121243A TW90121243A TW564404B TW 564404 B TW564404 B TW 564404B TW 090121243 A TW090121243 A TW 090121243A TW 90121243 A TW90121243 A TW 90121243A TW 564404 B TW564404 B TW 564404B
Authority
TW
Taiwan
Prior art keywords
optical disc
layer
spherical aberration
correction amount
aforementioned
Prior art date
Application number
TW090121243A
Other languages
English (en)
Chinese (zh)
Inventor
Yoshiaki Kaneuma
Hidehiko Wada
Seiji Nishino
Original Assignee
Matsushita Electric Ind Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=18756348&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=TW564404(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Matsushita Electric Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Application granted granted Critical
Publication of TW564404B publication Critical patent/TW564404B/zh

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1365—Separate or integrated refractive elements, e.g. wave plates
    • G11B7/1369—Active plates, e.g. liquid crystal panels or electrostrictive elements
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
    • G11B7/08511—Methods for track change, selection or preliminary positioning by moving the head with focus pull-in only
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1372—Lenses
    • G11B7/1378—Separate aberration correction lenses; Cylindrical lenses to generate astigmatism; Beam expanders
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1392—Means for controlling the beam wavefront, e.g. for correction of aberration
    • G11B7/13925—Means for controlling the beam wavefront, e.g. for correction of aberration active, e.g. controlled by electrical or mechanical means
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1392—Means for controlling the beam wavefront, e.g. for correction of aberration
    • G11B7/13925—Means for controlling the beam wavefront, e.g. for correction of aberration active, e.g. controlled by electrical or mechanical means
    • G11B7/13927—Means for controlling the beam wavefront, e.g. for correction of aberration active, e.g. controlled by electrical or mechanical means during transducing, e.g. to correct for variation of the spherical aberration due to disc tilt or irregularities in the cover layer thickness
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
    • G11B2007/0009—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage
    • G11B2007/0013—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage for carriers having multiple discrete layers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1372—Lenses
    • G11B2007/13727—Compound lenses, i.e. two or more lenses co-operating to perform a function, e.g. compound objective lens including a solid immersion lens, positive and negative lenses either bonded together or with adjustable spacing

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optical Head (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Optical Recording Or Reproduction (AREA)
TW090121243A 2000-09-06 2001-08-29 Optical disk unit and information recording and reproducing method TW564404B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000269805 2000-09-06

Publications (1)

Publication Number Publication Date
TW564404B true TW564404B (en) 2003-12-01

Family

ID=18756348

Family Applications (1)

Application Number Title Priority Date Filing Date
TW090121243A TW564404B (en) 2000-09-06 2001-08-29 Optical disk unit and information recording and reproducing method

Country Status (5)

Country Link
US (6) US6954417B2 (enrdf_load_stackoverflow)
JP (5) JP4287898B2 (enrdf_load_stackoverflow)
KR (2) KR100432832B1 (enrdf_load_stackoverflow)
CN (6) CN100435222C (enrdf_load_stackoverflow)
TW (1) TW564404B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8411542B2 (en) 2008-03-14 2013-04-02 Mediatek, Inc. Method for controlling layer changes for an optical disk drive

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Also Published As

Publication number Publication date
US20060158993A1 (en) 2006-07-20
CN1929001A (zh) 2007-03-14
US20040264312A1 (en) 2004-12-30
KR20020020240A (ko) 2002-03-14
US6954417B2 (en) 2005-10-11
JP2011210372A (ja) 2011-10-20
CN1288638C (zh) 2006-12-06
CN1343973A (zh) 2002-04-10
CN1299262C (zh) 2007-02-07
US7075878B2 (en) 2006-07-11
JP4309963B2 (ja) 2009-08-05
US7738343B2 (en) 2010-06-15
CN100435222C (zh) 2008-11-19
CN1929002A (zh) 2007-03-14
US7283450B2 (en) 2007-10-16
CN1314021C (zh) 2007-05-02
CN1516121A (zh) 2004-07-28
CN1484227A (zh) 2004-03-24
JP5220901B2 (ja) 2013-06-26
US7333405B2 (en) 2008-02-19
JP2009059468A (ja) 2009-03-19
CN1929000A (zh) 2007-03-14
US20060181985A1 (en) 2006-08-17
US7027378B2 (en) 2006-04-11
JP2009170101A (ja) 2009-07-30
JP2009104779A (ja) 2009-05-14
CN100435221C (zh) 2008-11-19
CN100435223C (zh) 2008-11-19
JP2008226460A (ja) 2008-09-25
KR20030096123A (ko) 2003-12-24
JP4287898B2 (ja) 2009-07-01
JP4857359B2 (ja) 2012-01-18
KR100452468B1 (ko) 2004-10-08
US20040264311A1 (en) 2004-12-30
JP4374067B2 (ja) 2009-12-02
US20060158994A1 (en) 2006-07-20
US20020027842A1 (en) 2002-03-07
KR100432832B1 (ko) 2004-05-22

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